package cn.itcast.order.service;

import cn.itcast.order.client.UserClient;
import cn.itcast.order.mapper.OrderMapper;
import cn.itcast.order.pojo.Order;
import cn.itcast.order.pojo.User;
import com.alibaba.fastjson.JSON;
import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

@Service
// @DefaultProperties(defaultFallback = "allMethodFallBack")
public class OrderService {

    @Autowired
    private OrderMapper orderMapper;

//    @Autowired
//    private RestTemplate restTemplate;

    @Autowired
    private UserClient userClient;

    // @HystrixCommand(fallbackMethod = "queryOrderByIdFallback" )
    // @HystrixCommand
    public String queryOrderById(Long orderId) {
        // 1.查询订单
        Order order = orderMapper.findById(orderId);
        // 2.远程查询user
        // 2.1设定url地址
        // String url = "http://localhost:8081/user/" +order.getUserId();
//        String url = "http://userservice/user/" +order.getUserId();
        // 2.2发起调用
//        User user = restTemplate.getForObject(url, User.class);
        // 采用feign进行调用
        User user = userClient.findById(order.getUserId());
        // 3.存入order
        order.setUser(user);
        // 4.返回
        // return order;
        return JSON.toJSONString(order);
    }

    // 局部降级
    public String queryOrderByIdFallback(Long orderId){
        return "服务器太忙啦，请稍后重试.........局部";
    }

    // 全局降级
    public String allMethodFallBack(){
        return "服务器太忙啦，请稍后重试.........全局";
    }

}
